Mass concentration of nitrogen oxide and nitrogen dioxide in atmosphere air samples. The procedure of measurement by photometric method using sulfanilic acid and I-naphthylamine
Regulatory document on standardization. Procedural guidelines. Quality standard for heating and make-up water of hot-water boilers, organization of water chemistry and chemical control
Regulations on registration drawing up and recording authorizations on manufacturing and employment technical devices in the system of Gosgortechnadzor of Russia
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